Depends on what sort of material you're after if you don't end up swapping the seats out, but the only thing I'd recommend is make sure they are built with airbags in mind so they don't hamper them deploying from the seat. You've got proper fitted (padded type) covers which would probably be better in that regard and then there's the slip over, (thinner style) ones. Go visit Supercheap and have a look around, they've got frangipanis in a range of colours.